I just did a new 3.4a install with KDE. I changed to a dark color theme, but I haven't rebuilt Konqueror or anything. With any other app, the colors display correctly. However, with Konqueror, the window text color is not correct. My window background is a dark gray, and instead of white text, I'm getting black text. As far as I can tell right now, this is the only app doing it.
I installed and am using the domino widget style, though I don't know that it should make a difference.